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The current study compares the effects of two types of pronunciation instruction (segmental- and suprasegmental-based) on the development of second-year Chinese undergraduate students’ English pronunciation as against a group with no specific pronunciation (NSP) instruction. The participants were 90 university-level students in the Chinese mainland, from three intact classes. One class was taught with a segmental focus (N = 30) and the second with a suprasegmental focus (N = 31), while the third received NSP instruction (N = 29). The results showed that after an 18-week period of instruction, both the segmental and suprasegmental groups made statistically significant progress in pronunciation, as measured by comprehensibility on a sentence-reading task; however, only the suprasegmental group made statistically significant progress in comprehensibility at the spontaneous level, and it was also the only group that maintained these spontaneous gains on the delayed posttest. The positive effects of explicit pronunciation instruction in general and of suprasegmental instruction in particular account for the findings.

Academic writing is developing to be more positive. This linguistic positivity bias is confirmed in academic writing across disciplines and genres. The current research adopted sentiment analysis and examined the diachronic change in linguistic positivity in the full texts of 2,556 research articles published in Science in 25 years. The results showed that academic writing in research articles in the journal Science has become significantly more positive in the past 25 years. The findings of this study confirm linguistic positivity bias in academic writing based on empirical data from Science. Reasons for the increasingly positive language use in science articles might include the popularization of science, the growing number of researchers, and the difficulty of publishing in high-impact journals. Finally, this study discussed the implications of our findings for researchers, editors, and peer reviewers.

Few studies have investigated the development of L2 complaints. This paper reports on a longitudinal study of L2 complaints produced by Chinese university English learners based on their performance of a discourse completion task consisting of 18 complaint scenarios in terms of power (+P, =P, −P) and social distance (−D, =D, +D), supplemented by a delayed retrospective verbal report. Data were collected twice, over two academic years. The results indicate that students in these two ‘phases’ showed broadly similar patterns of sociopragmatic competence in terms of their ability to calibrate complaints to complainees’ (addressees’) position on power and social distance continua. However, as to internal modifications, learners in Phase 2 used significantly more lexical and syntactic downgraders than in Phase 1 at all levels of power and social distance except for syntactic downgraders at +D and =D; they only used significantly more lexical upgraders at −D. As for external modifications, the findings also showed significantly different patterns in the use of pre-moves at all levels and post-moves at all levels except at −P. Increase of English proficiency and a certain degree of explicit pragmatic instruction may have contributed to Chinese EFL learners’ pragmatic development. Implications for pragmatic instruction are also discussed.